linux-kernel - [PATCH 30/70] mxser: remove MOXA

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Date:   Fri, 18 Jun 2021 08:14:36 +0200
From:   Jiri Slaby <jslaby@...e.cz>
To:     gregkh@...uxfoundation.org
Cc:     linux-serial@...r.kernel.org, linux-kernel@...r.kernel.org,
        Jiri Slaby <jslaby@...e.cz>
Subject: [PATCH 30/70] mxser: remove MOXA_HighSpeedOn ioctl

1) The semantics are defined exactly nowhere.
2) The ioctl definition was never exposed to userspace, so noone should
   actually be reliably using this.
3) It's not even mentioned in any of the mxser utilities.

Provided the above, remove this mxser-special ioctl.

Signed-off-by: Jiri Slaby <jslaby@...e.cz>
---
 drivers/tty/mxser.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/drivers/tty/mxser.c b/drivers/tty/mxser.c
index ca417d9a03cf..586fa3575673 100644
--- a/drivers/tty/mxser.c
+++ b/drivers/tty/mxser.c
@@ -50,7 +50,6 @@
  */
 
 #define MOXA			0x400
-#define MOXA_HighSpeedOn	(MOXA + 61)
 #define MOXA_SET_OP_MODE	(MOXA + 66)
 #define MOXA_GET_OP_MODE	(MOXA + 67)
 
@@ -1495,8 +1494,6 @@ static int mxser_ioctl(struct tty_struct *tty,
 
 		return wait_event_interruptible(info->port.delta_msr_wait,
 				mxser_cflags_changed(info, arg, &cnow));
-	case MOXA_HighSpeedOn:
-		return put_user(info->baud_base != 115200 ? 1 : 0, (int __user *)argp);
 	default:
 		return -ENOIOCTLCMD;
 	}
-- 
2.32.0